try to reduce bajillion warnings

src/libcoretest/fmt/num.rs

@@ -170,42 +170,42 @@ mod u32 {
     use test::Bencher;
     use core::fmt::radix;
     use std::rand::{weak_rng, Rng};
-    use std::old_io::util::NullWriter;
+    use std::io::{Write, sink};
 
     #[bench]
     fn format_bin(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{:b}", rng.gen::<u32>()) })
+        b.iter(|| { write!(&mut sink(), "{:b}", rng.gen::<u32>()) })
     }
 
     #[bench]
     fn format_oct(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{:o}", rng.gen::<u32>()) })
+        b.iter(|| { write!(&mut sink(), "{:o}", rng.gen::<u32>()) })
     }
 
     #[bench]
     fn format_dec(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{}", rng.gen::<u32>()) })
+        b.iter(|| { write!(&mut sink(), "{}", rng.gen::<u32>()) })
     }
 
     #[bench]
     fn format_hex(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{:x}", rng.gen::<u32>()) })
+        b.iter(|| { write!(&mut sink(), "{:x}", rng.gen::<u32>()) })
     }
 
     #[bench]
     fn format_show(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{:?}", rng.gen::<u32>()) })
+        b.iter(|| { write!(&mut sink(), "{:?}", rng.gen::<u32>()) })
     }
 
     #[bench]
     fn format_base_36(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{}", radix(rng.gen::<u32>(), 36)) })
+        b.iter(|| { write!(&mut sink(), "{}", radix(rng.gen::<u32>(), 36)) })
     }
 }
 
@@ -213,41 +213,41 @@ mod i32 {
     use test::Bencher;
     use core::fmt::radix;
     use std::rand::{weak_rng, Rng};
-    use std::old_io::util::NullWriter;
+    use std::io::{Write, sink};
 
     #[bench]
     fn format_bin(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{:b}", rng.gen::<i32>()) })
+        b.iter(|| { write!(&mut sink(), "{:b}", rng.gen::<i32>()) })
     }
 
     #[bench]
     fn format_oct(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{:o}", rng.gen::<i32>()) })
+        b.iter(|| { write!(&mut sink(), "{:o}", rng.gen::<i32>()) })
     }
 
     #[bench]
     fn format_dec(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{}", rng.gen::<i32>()) })
+        b.iter(|| { write!(&mut sink(), "{}", rng.gen::<i32>()) })
     }
 
     #[bench]
     fn format_hex(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{:x}", rng.gen::<i32>()) })
+        b.iter(|| { write!(&mut sink(), "{:x}", rng.gen::<i32>()) })
     }
 
     #[bench]
     fn format_show(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{:?}", rng.gen::<i32>()) })
+        b.iter(|| { write!(&mut sink(), "{:?}", rng.gen::<i32>()) })
     }
 
     #[bench]
     fn format_base_36(b: &mut Bencher) {
         let mut rng = weak_rng();
-        b.iter(|| { write!(&mut NullWriter, "{}", radix(rng.gen::<i32>(), 36)) })
+        b.iter(|| { write!(&mut sink(), "{}", radix(rng.gen::<i32>(), 36)) })
     }
 }

src/libcoretest/iter.rs

@@ -82,7 +82,7 @@ fn test_iterator_chain() {
     let xs = [0, 1, 2, 3, 4, 5];
     let ys = [30, 40, 50, 60];
     let expected = [0, 1, 2, 3, 4, 5, 30, 40, 50, 60];
-    let mut it = xs.iter().chain(ys.iter());
+    let it = xs.iter().chain(ys.iter());
     let mut i = 0;
     for &x in it {
         assert_eq!(x, expected[i]);
@@ -91,7 +91,7 @@ fn test_iterator_chain() {
     assert_eq!(i, expected.len());
 
     let ys = count(30, 10).take(4);
-    let mut it = xs.iter().cloned().chain(ys);
+    let it = xs.iter().cloned().chain(ys);
     let mut i = 0;
     for x in it {
         assert_eq!(x, expected[i]);
@@ -110,7 +110,7 @@ fn test_filter_map() {
 #[test]
 fn test_iterator_enumerate() {
     let xs = [0, 1, 2, 3, 4, 5];
-    let mut it = xs.iter().enumerate();
+    let it = xs.iter().enumerate();
     for (i, &x) in it {
         assert_eq!(i, x);
     }
@@ -152,7 +152,7 @@ fn test_iterator_peekable() {
 fn test_iterator_take_while() {
     let xs = [0, 1, 2, 3, 5, 13, 15, 16, 17, 19];
     let ys = [0, 1, 2, 3, 5, 13];
-    let mut it = xs.iter().take_while(|&x| *x < 15);
+    let it = xs.iter().take_while(|&x| *x < 15);
     let mut i = 0;
     for x in it {
         assert_eq!(*x, ys[i]);
@@ -165,7 +165,7 @@ fn test_iterator_take_while() {
 fn test_iterator_skip_while() {
     let xs = [0, 1, 2, 3, 5, 13, 15, 16, 17, 19];
     let ys = [15, 16, 17, 19];
-    let mut it = xs.iter().skip_while(|&x| *x < 15);
+    let it = xs.iter().skip_while(|&x| *x < 15);
     let mut i = 0;
     for x in it {
         assert_eq!(*x, ys[i]);
@@ -231,7 +231,7 @@ fn test_iterator_scan() {
     let xs = [0, 1, 2, 3, 4];
     let ys = [0f64, 1.0, 3.0, 6.0, 10.0];
 
-    let mut it = xs.iter().scan(0, add);
+    let it = xs.iter().scan(0, add);
     let mut i = 0;
     for x in it {
         assert_eq!(x, ys[i]);
@@ -244,7 +244,7 @@ fn test_iterator_scan() {
 fn test_iterator_flat_map() {
     let xs = [0, 3, 6];
     let ys = [0, 1, 2, 3, 4, 5, 6, 7, 8];
-    let mut it = xs.iter().flat_map(|&x| count(x, 1).take(3));
+    let it = xs.iter().flat_map(|&x| count(x, 1).take(3));
     let mut i = 0;
     for x in it {
         assert_eq!(x, ys[i]);
@@ -279,7 +279,7 @@ fn test_unfoldr() {
         }
     }
 
-    let mut it = Unfold::new(0, count);
+    let it = Unfold::new(0, count);
     let mut i = 0;
     for counted in it {
         assert_eq!(counted, i);

src/libcoretest/lib.rs

@@ -12,6 +12,15 @@
 #![feature(int_uint)]
 #![feature(unboxed_closures)]
 #![feature(unsafe_destructor)]
+#![feature(core)]
+#![feature(test)]
+#![feature(rand)]
+#![feature(unicode)]
+#![feature(std_misc)]
+#![feature(libc)]
+#![feature(hash)]
+#![feature(io)]
+#![feature(collections)]
 #![allow(deprecated)] // rand
 
 extern crate core;